CN221237676U

CN221237676U - Safety pressure relief device for gas pipeline

Info

Publication number: CN221237676U
Application number: CN202420243954.4U
Authority: CN
Inventors: 徐刚; 谢涛; 班雁菊; 孔祥龙; 罗军; 帅文春
Original assignee: Xinjiang Dexin Gas Co ltd
Current assignee: Xinjiang Dexin Gas Co ltd
Priority date: 2024-02-01
Filing date: 2024-02-01
Publication date: 2024-06-28
Anticipated expiration: 2034-02-01

Abstract

The utility model relates to the technical field of fuel gas conveying, in particular to a safety pressure relief device for a fuel gas pipeline. The gas pipeline safety pressure relief device comprises a pressure relief pipe, a first gas pressure sensor and a communicated installation pipe are arranged in the pressure relief pipe, collecting assemblies are arranged on two sides of the installation pipe, and a driving assembly is arranged in the installation pipe; the collecting assembly comprises a collecting tank, the collecting tank is placed on a pressure relief pipe, a second air pressure sensor is arranged in the collecting tank, a communicating pipe is arranged at the inner top of the collecting tank, and an electromagnetic valve is arranged on the communicating pipe; the gas pipeline safety pressure relief device provided by the utility model can collect gas in the later stage of pressure relief, so that pollution to surrounding air caused by gas leakage in pressure relief and poisoning caused by personnel sucking are avoided.

Description

Safety pressure relief device for gas pipeline

Technical Field

The utility model relates to the technical field of fuel gas conveying, in particular to a safety pressure relief device for a fuel gas pipeline.

Background

Gas is a generic term for gaseous fuels that burn to give off heat for residential and industrial use. The gas is of various kinds, mainly natural gas, artificial gas, liquefied petroleum gas, biogas and coal gas. The gas pipeline is a special pipeline for conveying gas, and when the gas pipeline is used for conveying the gas, the pipeline is sealed, so that the pressure in the pipeline can be larger than the pressure value outside the pipeline, and in order to ensure the safety of the conveying pipeline, a pressure relief device is often required to be installed on the conveying pipeline for pressure relief.

The existing pressure relief device is generally used for directly opening the pressure relief hole when relieving pressure, so that the air pressure in the pipeline outwards flows out through the pressure relief hole to realize pressure relief, and because the fuel gas is generally toxic gas, the fuel gas is directly discharged in the air, so that air pollution can be caused, and the poisoning phenomenon of surrounding personnel is very easy to occur.

Therefore, it is necessary to provide a new gas pipeline safety pressure relief device to solve the above technical problems.

Disclosure of utility model

In order to solve the technical problems, the utility model provides a safety pressure relief device for a gas pipeline.

The utility model provides a gas pipeline safety pressure relief device, which comprises:

The pressure relief pipe is internally provided with a first air pressure sensor and a communicated mounting pipe, both sides of the mounting pipe are respectively provided with a collecting assembly, and the inside of the mounting pipe is provided with a driving assembly;

The collecting assembly comprises a collecting tank, the collecting tank is placed on a pressure relief pipe, a second air pressure sensor is arranged in the collecting tank, a communicating pipe is arranged at the inner top of the collecting tank, and an electromagnetic valve is arranged on the communicating pipe;

The driving assembly comprises a top cover, the top cover is arranged at the top of the installation tube, a connecting frame is arranged at the bottom of the top cover through a hydraulic rod, the outer wall of the connecting frame is propped against the inside of the installation tube and is in sliding connection with the inside of the installation tube, switching tubes are arranged on two sides of the outer wall of the connecting frame, the switching tubes are inlaid on the side wall of the installation tube, and one end of each switching tube located outside is communicated with the communicating tube.

Preferably, both ends of the outer part of the pressure relief pipe are respectively sleeved with a fixed ring in fixed connection, two sealing covers in fixed connection are respectively arranged on one side wall of the fixed rings, and the end parts of the sealing covers are respectively provided with a rubber ring in fixed connection.

Preferably, the outer wall of the installation tube is provided with a controller, the two side walls of the installation tube are provided with through holes, and the through holes are sleeved with and communicated with a transfer tube.

Preferably, the inside of transfer pipe is erect fixed connection's bracing piece and sealing ring, the inside of bracing piece is inserted and is equipped with sliding connection's slide bar, the cover is equipped with fixed connection's sealing piece on the outer wall of slide bar, the outer wall of sealing piece offsets and sliding connection with the inner wall of sealing ring, just the diameter specification of sealing piece is less than the diameter specification of transfer pipe.

Preferably, the end part of the sliding rod, which is close to the mounting tube, is provided with a fixedly connected extrusion block, an extrusion rod which is propped against and is in sliding connection is arranged outside the extrusion block, and the top end of the extrusion rod is fixedly connected with the inner top of the connecting frame.

Preferably, a pull rope is arranged between the end part of the extrusion block and the inner top part of the connecting frame, a guide rod which is propped against and is in sliding connection is arranged on the outer wall of the pull rope, and the guide rod is fixedly erected in the installation pipe.

Compared with the related art, the gas pipeline safety pressure relief device provided by the utility model has the following beneficial effects:

1. The utility model can collect the fuel gas in the later stage of pressure relief, and avoids the pollution of the fuel gas leakage to the surrounding air and the poisoning phenomenon caused by personnel sucking during pressure relief.

2. According to the utility model, the extrusion type sealing from inside to outside is adopted, so that the extrusion force from the inside to outside of the gas pipeline can smoothly extrude the sealing piece in the later use, the extrusion force between the sealing piece and the sealing ring is increased, the extrusion sealing effect of the sealing piece and the sealing ring is more excellent, and the leakage phenomenon at the sealing part is reduced.

3. After the pressure relief pipe is communicated with the gas pipeline in the later stage, the joint of the pressure relief pipe and the gas pipeline can be sealed through the sealing cover, so that bolts at the joint of the pressure relief pipe and the gas pipeline can be reduced, rust death occurs under the accumulation of time, and the difficulty of maintenance and disassembly of the pressure relief pipe and the gas pipeline by later-stage staff is increased.

Drawings

FIG. 1 is a schematic diagram of a safety pressure relief device for a gas pipeline according to a preferred embodiment of the present utility model;

FIG. 2 is a schematic diagram of the driving assembly shown in FIG. 1;

FIG. 3 is a schematic view of the adapter and its components shown in FIG. 2;

fig. 4 is a schematic structural diagram of the pressure relief tube and the collection assembly shown in fig. 1.

Reference numerals in the drawings: 1. a pressure relief tube; 11. a first air pressure sensor; 12. installing a pipe; 13. a controller; 14. a through hole; 2. a drive assembly; 21. a top cover; 211. a hydraulic rod; 22. a connection frame; 221. an extrusion rod; 23. a transfer tube; 231. a support rod; 232. a seal ring; 233. a slide bar; 234. a sealing sheet; 24. extruding a block; 241. a pull rope; 25. a guide rod; 3. a collection assembly; 31. a collection tank; 311. a communicating pipe; 312. an electromagnetic valve; 32. a second air pressure sensor; 4. a fixing ring; 41. a sealing cover; 42. a rubber ring.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Specific implementations of the utility model are described in detail below in connection with specific embodiments.

Referring to fig. 1 to 4, a gas pipeline safety pressure relief device provided in an embodiment of the present utility model includes: a pressure relief tube 1, a drive assembly 2 and a collection assembly 3.

In the embodiment of the present utility model, referring to fig. 1 and 4, a first air pressure sensor 11 and a communicating installation tube 12 are disposed inside a pressure relief tube 1, a collection assembly 3 includes a collection tank 31, the collection tank 31 is disposed on the pressure relief tube 1, a second air pressure sensor 32 is disposed inside the collection tank 31, a communicating tube 311 is disposed at the inner top of the collection tank 31, and an electromagnetic valve 312 is disposed on the communicating tube 311.

It should be noted that: the gas can be collected during the later pressure relief, so that the pollution of the gas leakage to the surrounding air and the poisoning phenomenon caused by personnel sucking during the pressure relief are avoided;

And through the setting of solenoid valve 312 and second baroceptor 32, later stage when controller 13 detects through second baroceptor 32 that the pressure of the inside of collection tank 31 reaches the setting value, can control solenoid valve 312 and work, make it seal communicating pipe 311, and then can avoid the inside gas that collects of collection tank 31 to circulate outwards, and then can be convenient for personnel dismantle communicating pipe 311 and adapter tube 23, change collection tank 31.

In the embodiment of the present utility model, referring to fig. 1 to 4, the driving assembly 2 includes a top cover 21, the top cover 21 is disposed at the top of the mounting tube 12, the bottom of the top cover 21 is provided with a connection frame 22 through a hydraulic rod 211, the outer wall of the connection frame 22 abuts against and is slidingly connected with the inside of the mounting tube 12, both sides of the outer wall of the connection frame 22 are provided with a transfer tube 23, the transfer tube 23 is inlaid on the side wall of the mounting tube 12, one end of the transfer tube 23 located outside is communicated with the communication tube 311, a support rod 231 and a sealing ring 232 are fixedly connected with the inside of the transfer tube 23, a sliding rod 233 is inserted in the support rod 231, a sealing piece 234 is sleeved on the outer wall of the sliding rod 233, the outer wall of the sealing piece 234 abuts against and is slidingly connected with the inner wall of the sealing ring 232, the diameter specification of the sealing piece 234 is smaller than the diameter specification of the transfer tube 23, the end of the sliding rod 233 is provided with a fixedly connected extrusion block 24, the outer side of the extrusion block 24 is provided with an extrusion rod 221 which is slidingly connected with the inner top of the connection frame 22, the top of the extrusion rod 221 is fixedly connected with the inner top of the connection frame 22, a guide rod 25 is rotatably connected with the inner wall of the pull rope 25.

It should be noted that: if extrusion type sealing from inside to outside is adopted, during later use, the extrusion force from the inside to outside of the gas pipeline can smoothly extrude the sealing piece 234, so that the extrusion force between the sealing piece 234 and the sealing ring 232 is increased, the extrusion sealing effect of the sealing piece 234 and the sealing ring 232 is more excellent, and the leakage phenomenon at the sealing part is reduced;

Through the arrangement of the guide rod 25, when the connecting frame 22 pulls the extrusion block 24 through the pull rope 241 in the later period, the guide rod 25 can smoothly guide and change the direction of the pull rope 241, so that the movement of pulling the extrusion block 24 in the later period of the pull rope 241 is more stable;

the sliding rod 233 is in a rectangular structure, so that the sliding rod 233 can be prevented from rotating randomly when the sliding rod 233 is subjected to acting force to slide in the later stage, so that the sliding rod 233 slides stably, and meanwhile, the end extrusion block 24 and the extrusion rod 221 are always opposite to each other, so that the later stage can move stably;

Meanwhile, rubber gaskets are arranged at the propping positions of the sealing rings 232 and the sealing sheets 234, and then when the sealing rings 232 and the sealing sheets 234 prop against each other in the later period, the rubber gaskets can be extruded, so that the rubber gaskets deform, and the sealing effect of the propping positions of the sealing rings 232 and the sealing sheets 234 is better.

In the embodiment of the present utility model, referring to fig. 4, two ends of the exterior of the pressure relief tube 1 are respectively sleeved with a fixed ring 4, a sealing cover 41 is respectively provided on one side wall of the two fixed rings 4 opposite to each other, and the ends of the sealing cover 41 are respectively provided with a rubber ring 42.

It should be noted that: through setting up sealed cowling 41 and rubber ring 42 at the both ends of pressure release pipe 1, later stage is being connected the back with this device and gas pipeline, through establishing the rubber ring 42 cover on gas pipeline's outer wall, make it drive sealed cowling 41 and cover the junction of gas pipeline and pressure release pipe 1, can be smooth seal both junction parts, simultaneously through the fixed mode of rubber ring 42 self tightening force, can make the staff later stage establish and dismantle the cover of sealed cowling 41 all convenient and fast more.

In the embodiment of the present utility model, referring to fig. 4, a controller 13 is disposed on the outer wall of the mounting tube 12, through holes 14 are disposed on both side walls of the mounting tube 12, and an adapter tube 23 is sleeved and connected in the through holes 14.

It should be noted that: through the setting of controller 13 to connect controller 13 with hydraulic stem 211, first air pressure sensor 11, second air pressure sensor 32 and solenoid valve 312, in the later stage use, controller 13 can be through the automatic work according to setting for the numerical value that each electrical component detected, consequently can make this device later stage more convenient.

The working principle of the gas pipeline safety pressure relief device provided by the utility model is as follows:

When the pressure relief device is used, a worker can fix the two ends of the pressure relief pipe 1 in the pressure relief device between the flange and the gas pipeline through bolts, then can pick up the rubber rings 42 at the two ends of the pressure relief pipe 1, enlarge the rubber rings 42, move to the outside of the gas pipeline and loosen the supporting force of the rubber rings 42, at the moment, the rubber rings 42 can be smoothly attached to the outer wall of the gas pipeline through the self contraction force, and further can smoothly cover and seal the connecting part of the gas pipeline and the pressure relief pipe 1 through the external sealing cover 41;

After the installation connection of the device is completed, the gas in the gas pipeline can be transported through the pressure relief pipe 1, the first gas pressure sensor 11 positioned in the pressure relief pipe 1 can smoothly detect the internal pressure, and when the internal pressure reaches the upper limit of a set value, the hydraulic rod 211 can be automatically controlled to shrink;

The hydraulic rod 211 that contracts and moves up at this moment can smoothly drive the connecting frame 22 to slide in the installation tube 12, the sliding connecting frame 22 can smoothly pull the extrusion block 24 through the pull rope 241 to move, the extrusion block 24 drives the sealing piece 234 to move towards one side far away from the sealing ring 232 through the slide rod 233, the sealing piece 234 can be smoothly separated from the sealing ring 232, and meanwhile, the controller 13 can smoothly open the electromagnetic valve 312, and at this moment, the gas in the pressure relief tube 1 can smoothly circulate and relieve pressure to the inside of the collection tank 31 through the switching tube 23 and the communicating tube 311, so that the gas in the pressure relief can be smoothly collected by the collection tank 31, and therefore, the gas outflow in the pressure relief process can be reduced, and the phenomena of air pollution and personnel poisoning are caused.

The circuits and control involved in the present utility model are all of the prior art, and are not described in detail herein.

The foregoing is only illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, and all equivalent structures or equivalent flow modifications which may be made by the teachings of the present utility model and the accompanying drawings or which may be directly or indirectly employed in other related art are within the scope of the utility model.

Claims

1. A gas pipeline safety pressure relief device, characterized by comprising:

The pressure relief pipe (1), the inside of pressure relief pipe (1) is equipped with first air pressure sensor (11) and installation pipe (12) of intercommunication, the both sides of installation pipe (12) all are equipped with collection subassembly (3), just the inside of installation pipe (12) is equipped with drive assembly (2);

The collecting assembly (3) comprises a collecting tank (31), the collecting tank (31) is placed on the pressure relief pipe (1), a second air pressure sensor (32) is arranged in the collecting tank (31), a communicating pipe (311) which is communicated is arranged at the inner top of the collecting tank (31), and an electromagnetic valve (312) is arranged on the communicating pipe (311);

The driving assembly (2) comprises a top cover (21), the top cover (21) is arranged at the top of the mounting pipe (12), a connecting frame (22) is arranged at the bottom of the top cover (21) through a hydraulic rod (211), the outer wall of the connecting frame (22) is propped against the inside of the mounting pipe (12) and is in sliding connection with the inside of the mounting pipe, two sides of the outer wall of the connecting frame (22) are respectively provided with a switching pipe (23), the switching pipes (23) are inlaid on the side wall of the mounting pipe (12), and one end of each switching pipe (23) located outside is communicated with the communicating pipe (311).

2. The gas pipeline safety pressure relief device according to claim 1, wherein two ends of the outer portion of the pressure relief pipe (1) are respectively sleeved with a fixed ring (4) which is fixedly connected, a sealing cover (41) which is fixedly connected is respectively arranged on one side wall of the two fixed rings (4) which are opposite, and the end parts of the sealing covers (41) are respectively provided with a rubber ring (42) which is fixedly connected.

3. The gas pipeline safety pressure relief device according to claim 1, wherein a controller (13) is arranged on the outer wall of the installation pipe (12), through holes (14) are formed in two side walls of the installation pipe (12), and an adapter pipe (23) is sleeved and communicated in the through holes (14).

4. The gas pipeline safety pressure relief device according to claim 1, wherein a supporting rod (231) and a sealing ring (232) which are fixedly connected are arranged in the adapter tube (23), a sliding rod (233) which is in sliding connection is inserted in the supporting rod (231), a sealing sheet (234) which is fixedly connected is sleeved on the outer wall of the sliding rod (233), the outer wall of the sealing sheet (234) abuts against the inner wall of the sealing ring (232) and is in sliding connection, and the diameter specification of the sealing sheet (234) is smaller than that of the adapter tube (23).

5. The gas pipeline safety pressure relief device according to claim 4, wherein an end portion of the sliding rod (233) close to the mounting pipe (12) is provided with a fixedly connected extrusion block (24), an extrusion rod (221) which is abutted against and slidingly connected is arranged outside the extrusion block (24), and the top end of the extrusion rod (221) is fixedly connected with the inner top of the connecting frame (22).

6. The gas pipeline safety pressure relief device according to claim 5, characterized in that a pull rope (241) is arranged between the end part of the extrusion block (24) and the inner top part of the connecting frame (22), a guide rod (25) which is propped against and is connected in a sliding way is arranged on the outer wall of the pull rope (241), and the guide rod (25) is fixedly erected in the installation pipe (12).